I'm doing a rewatch of Eva at the moment and I remembered a version of Fly Me to the Moon that I really liked. Turns out it was the Aya London Beat version that's found on the third OST. Is it actually used anywhere in the series?

The London version is not listed. In any case, it is over eight minutes long, so couldn't be used as it stands. The album labels and notes also distinctly separate it away from the rest, and it's remixed by someone who has no other input to the franchise.

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pwhodges: In those cases where the information is on our wiki, it's preferable to link to that, since wikia copied the full site at one point. Looks like wikia even neutered the original FMttM listing. (I replaced the link in your post with the local version.)